Title: Biology 11/10/06 Objectives: Class Topics 6/28/2019 Title: Biology 11/10/06 Objectives: To complete the eggsperiment, assess knowledge gained about passive transport and learn about active transport. Class Topics Hand in W.S. “Homeostasis and transport” before the bell rings Please do not hand in the lab “Eggsperiment” Chapter 4 Quiz 1 Notes – Chapter 4 Active Transport “Man’s mind stretched to a new idea never goes back to its original dimensions.” Oliver Wendell Holmes Friday, June 28, 2019 8:31 AM
Miscellaneous Do not assume I will be available for help after school 6/28/2019 Miscellaneous Do not assume I will be available for help after school Before school I will still be available If I’m not in my room, check other places! I will be available during homeroom Check with me about after school time Review times can be arranged ahead of time
6/28/2019 Eggsperiment Determine a range for the percentage of water and the percentage of solute in your egg. Explain how you determined this Write a description of how you could find the exact percentage of water and solute in your egg. Hand in the ‘Eggsperiment’
Class Assignments Eggsperiment 11/10/06 6/28/2019 Class Assignments What By When Eggsperiment 11/10/06 W.S. “Homeostasis and transport” 11/10/06 Chapter 4 Quiz 1 11/10/06 W.S. 4.2 (DR/Quiz) 11/14/06 Due this class period Due next class period Due in the future
Grade Sheet 1A – SR p. 61 - 5 pts Measurement W.S. – 10 pts 6/28/2019 Grade Sheet 1A – SR p. 61 - 5 pts Measurement W.S. – 10 pts 3A SR p. 42 – 6 pts 4A – SR p. 47 – 5 pts 2A – Measurement W.S. – 10 pts
Postquiz Activities Hand in quiz Pick up “Active Transport” handout 6/28/2019 Postquiz Activities Hand in quiz Pick up “Active Transport” handout Read 81-86
Ion Channels (a type of facilitated diffusion) 6/28/2019 Ion Channels (a type of facilitated diffusion) Transport proteins have polar channels for the important ions to pass Na+, K+, Ca2+, and Cl- Fig 3 Used in maintaining electrical charge or nerve cells
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6/28/2019 Active Transport Using energy to move particles across the cell membrane - through an transport protein (pump) Usually against the concentration gradient - like going up a hill Ex. glucose into liver and muscle cells for storage from a low concentration in the bloodstream to a high concentration in the cells
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Sodium-Potassium Pump figure 5 6/28/2019 Sodium-Potassium Pump figure 5 Found in nerve cells Pumps 3 Na+ out of the cell and 2 K+ into the cell Both against their concentration gradient
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From: http://www.accessexcellence.org/RC/VL/GG/passActiveTrans.html 6/28/2019 From: http://www.accessexcellence.org/RC/VL/GG/passActiveTrans.html
Bulk Transport Also known as cytosis 6/28/2019 Bulk Transport Also known as cytosis Uses cell energy (active transport) Moving large particles - larger than integral proteins - into or out of the cell Endocytosis – into the cell Exocytosis- out of the cell
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6/28/2019 From: http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBooktransp.html
Exocytosis Excretion Secretion release waste release products 6/28/2019 Exocytosis Excretion release waste Secretion release products enzymes, carbohydrates, or hormones made by the cell
Membrane Receptor Proteins 6/28/2019 Membrane Receptor Proteins Signal molecules bind to receptor proteins and causes a change in the cell Changes in permeability Open ion channel Second messengers Activates another protein inside the cell Enzyme action Speeds up a reaction (heroin)
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